It’s More Normal Than You Think
First things first: in most cases, grass-eating is completely normal canine behavior. Studies show that nearly 80% of pet dogs have eaten grass at some point, and most do so without any signs of illness.
Dogs are omnivores by nature, and munching on plants may be instinctual. In the wild, dogs and their relatives often consume the stomach contents of herbivorous prey, which can include grasses and other greens.
Common Reasons Dogs Eat Grass
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Tummy Troubles
Some dogs eat grass when they’re feeling nauseous, and yes—sometimes they throw up afterward. But most dogs who eat grass don’t vomit, and most dogs who vomit weren’t feeling sick before eating grass. -
Boredom or Anxiety
Chewing grass can be a way for dogs to relieve boredom or calm themselves, especially if they’re not getting enough physical or mental stimulation. -
It Tastes Good!
Believe it or not, some dogs just like the taste and texture of fresh grass—especially in spring when it’s soft and sweet. -
Fiber Fix
Some experts think dogs may be craving more fiber in their diet. If your dog seems obsessed with eating grass, it might be worth reviewing their food to make sure they’re getting enough roughage.
When to Worry
While grass-eating is usually harmless, you should pay attention if:
- Your dog eats grass obsessively
- They vomit frequently afterward
- They show other signs of illness (lethargy, diarrhea, lack of appetite)
Also, be cautious of lawns treated with pesticides, herbicides, or fertilizers, which can be toxic if ingested.
The Bottom Line
For most dogs, eating grass is a harmless—and surprisingly common—habit. As long as your pup is otherwise healthy and not overdoing it, there’s usually no need to worry. Just keep an eye on their behavior, and make sure any grass they have access to is safe and chemical-free.
